sdm welding
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Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding
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Chapter 6Welding
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TRADEMARKS ACKNOWLEDGEMENT
Terms mentioned in this document that are known or understood to be trademarks, whetherregistered or not, have been identified. Where trademarks have been confirmed as registered inAustralia, this has been indicated by the addition of the symbol, otherwise the symbol isused. While all care has been taken to identify trademarks, users should rely on their owninquiries to determine trademark ownership. Use of a term in this document as a trademarkshould not be regarded as affecting the validity of any trademark.6
IMPORTANT INFORMATION
The requirements of this document represent Technical Policy of the department and containTechnical Standards. Compliance with the departments Technical Standards is mandatory forall applications for the design, construction, maintenance and operation of road transportinfrastructure in Queensland by or on behalf of the State of Queensland.
This document will be reviewed from time to time as the need arises and in response toimprovement suggestions by users. P lease send your comments and suggestions to thefeedback email given below.
FEEDBACK
Your feedback is welcomed. Please send to [email protected].
DISCLAIMER
This publication has been created for use in the design, construction, maintenance andoperation of road transport infrastructure in Queensland by or on behalf of the State ofQueensland.
Where the publication is used in other than the departments infrastructure projects, the State ofQueensland and the department gives no warranties as to the completeness, accuracy oradequacy of the publication or any parts of it and accepts no responsibility or liability upon anybasis whatever for anything contained in or omitted from the publication or for theconsequences of the use or misuse of the publication or any parts of it.
If the publication or any part of it forms part of a written contract between the State ofQueensland and a contractor, this disclaimer applies subject to the express terms of thatcontract.
COPYRIGHT
Copyright protects this publication. Except for the purposes permitted by and subject to theconditions prescribed under the Copyright Act, reproduction by any means (including electronic,mechanical, photocopying, microcopying or otherwise) is prohibited without the prior writtenpermission of the department. Enquiries regarding such permission should be directed to theContracts and Technical Capability Branch, Queensland Department of Transport and MainRoads.
State of Queensland (Department of Transport and Main Roads) 2011
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Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding
Volume Contents
Chapter 1
Introduction
Chapter 11
General Arrangement Drawings
Chapter 2
Standard of Presentation
Chapter 12
Abutments and Piers
Chapter 3
Concrete and Reinforcement
Detailing
Chapter 13
Provision for Bridge J acking,
Inspection and Maintenance
Chapter 4
Computer Preparation ofSteel Schedules
Chapter 14
Prestressed Concrete Girders
Chapter 5
Notes
Chapter 15
Prestressed Concrete Deck Units
Chapter 6
Welding
Chapter 16
Piles and Footings
Chapter 7
Deck Wearing Surface
Chapter 17
Cast Insitu Kerbs and Decks
Chapter 8
Bridge Widening
Chapter 18
Expansion J oints and
Miscellaneous Details
Chapter 9
Bridge Deck Types
Chapter 19
Bridge Barriers
VOLUME3
Chapter 10
Bridge Geometry
Chapter 20
Electronic Project Model (EPM)
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Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding
Table of Contents
6.1 Glossary of Terms 16.2 Figures and Examples shown in this Volume 1
6.3 Notes Format 1
6.4 Welding of Stainless Steel 1
6 6.5 Welding Splice of Reinforc ing Bar 16.6 Direct Butt Splice & Anchorage Splice Welds for Reinforc ing Bar 3
6.7 Welding Symbols 4
6.8 Presentation Details 4
6.9 References 9
List of Tables and Figures
Table 6.5-1 Welded Lap Lengths - One Side of Bar Welded 2
Table 6.5-2 Welded Lap Lengths - Both Sides of Bar Welded 2
Figure 6.5-3 Welded Splice 2
Figure 6.7-1 Standard Location of Elements of a Welding Symbol 4
Figure 6.8-1 Basic Elements of a Weld Symbol 5
Figure 6.8-2 Determining Size of a Fillet Weld 5
Figure 6.8-3 Weld on Arrow Side of Join t 6
Figure 6.8-4 Weld on Both Sides of Join t 6
Figure 6.8-5 Intermit tent or Stitch Welds 7
Figure 6.8-6 But t Weld 7
Figure 6.8-7 Bridge Traffic Barrier Post to Base Plate 8
Figure 6.8-8 Combination Butt and Fillet Welds 8
Figure 6.8-9 Bridge Traffic Barrier Post to Anchor Plate 9
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Chapter 6 Amendments November 2011
Revision Register
Issue/
Rev
No.
Reference
Section
Descript ion of Revision Authorised
by
Date
1 - First Issue. Manager
(Structural
Drafting)
April
2011
2 -
6.8
Document name change.
Weld preparation details amended in Figures6.8-7 and 6.8-8.
Manager
(Structural
Drafting)
Nov
2011
6
7
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Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding
Chapter 6
Welding6.1 Glossary of Terms
For a complete glossary of terms referChapter 1 - Introduction.
66.2 Figures and Examples shown in this VolumeThe figures and examples shown in this volume are for presentation purposes only, and may
contain some details that are now superseded. These details have been included for ease of
reference, to illustrate typical solutions, and to show the required standard of draftingpresentation. The details are not to be used without an engineering check and certification by a
Structural RPEQ to confirm that the details are appropriate for the specific project.
6.3 Notes Format
For general welding notes referChapter 5 - Notes. Show only the welding notes applicable to
the details on the drawing.
6.4 Welding of Stainless Steel
Welds shall be Category 2B in accordance with AS/NZS 1554.6 - Structural Steel Welding
Part 6: Welding Stainless Steels for Structural Purposes.
6.5 Welding Splice of Reinforcing Bar
Design Details
The welded splice for a reinforcing bar shall be a flare-v-butt weld in accordance
withAS 1554.3 - Structural Steel Welding.
The diameter of the smallest bar is the controlling factor for the size of the weld.
The minimum throat thickness (D) shall not be less than 0.25 x smallest bar diameter.
The minimum width of the weld (W) shall not be less than 0.45 x smallest bar diameter.
Welds are not permitted on a bent portion of a bar. Welds shall be kept clear of any bent portion
of a bar by a minimum distance of twice the diameter of the bar being bent.
Weld Tables for Welded Splice
The following tables show welding requirements for nominated bar diameters. Refer Table
6.5-1 Welded Lap Lengths - One Side of Bar Welded, Table 6.5-2 Welded Lap Lengths - Both
Sides of Bar Welded, andFigure 6.5-3 Welded Splice. The preferred splice is a weld on both
sides of the bar.
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Table 6.5-1 Welded Lap Lengths - One Side of Bar Welded
Bar
Diameter
S
(mm)
D
(mm)
W
(mm)
Welding Consumable Weld Length (mm)
(SP Category Weld)
R10 5 3 6 100
N12 6 3 6 110
N16 8 4 7 150
N20 10 5 9 180
N24 12 6 11 220
N28 14 7 13 260
N32 16 8 15 290
N36 18 9 16
E4916, E4918 or W50X
to AS/NZS 4855
330
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Table 6.5-2 Welded Lap Lengths - Both Sides of Bar Welded
Bar
Diameter
S
(mm)
D
(mm)
W
(mm)
Welding Consumable Weld Length (mm)
(SP Category Weld)
R10 5 3 6 50
N12 6 3 6 60
N16 8 4 7 80
N20 10 5 9 100
N24 12 6 11 120
N28 14 7 13 140
N32 16 8 15 160
N36 18 9 16
E4916, E4918 or W50X
to AS/NZS 4855
180
Figure 6.5-3 Welded Splice
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The following conditions apply:
All welds to be SP category (note to be shown on drawings)
Weld width "W" not shown on drawing
4mm minimum throat thickness
Minimum weld length on both sides of the bar shall be in accordance
withAS 1554.3 - Structural Steel Welding Part 3: Welding of Reinforcing Steel, Table 3.2
66.6 Direct Butt Splice & Anchorage Splice Welds forReinforcing BarThe preferred welding consumables for direct butt splice welds and anchorage splice welds for
reinforcing bar are shown below:-
Weld Type Detail Consumable
Direct Butt
Splice
E5518, W55X
or W62X to
AS/NZS 4855
Anchorage
Splice
E5518, W55X
or W62X to
AS/NZS 4855
The following conditions apply:-
All welds to be SP category (note to be shown on drawings)
The Design Engineer shall nominate all the weld sizes, but the minimum throat thickness
for anchorage splice welds shall be 4mm
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6.7 Welding Symbols
Welding symbols on drawings are to conform to AS 1101.3 - Graphical Symbols for General
Engineering Part 3: Welding and Non-destructive Examination.The standard location of elements of a welding symbol is shown in Figure 6.7-1 Standard
Location of Elements of a Welding Symbol.
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Figure 6.7-1 Standard Location of Elements of a Welding Symbol
6.8 Presentation Details
The following is a basic cross section of commonly detailed welding symbols that may be
encountered on drawings.
Examples have been provided on the following pages that cover most fillet weld and butt weld
joints.
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Figure 6.8-1 Basic Elements of a Weld Symbol
Figure 6.8-2 Determining Size of a Fillet Weld shows how the size of a fillet weld is
determined. Accurate measurement of fillet welds requires the use of a weld fillet gauge.
Figure 6.8-2 Determining Size of a Fillet Weld
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The following sketch shows a 6mm fillet weld is needed
on the side of the joint that the arrow is pointing.
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Figure 6.8-3 Weld on Arrow Side of Joint
The following sketch shows a 6mm fillet
weld is needed on both sides of the joint.
Figure 6.8-4 Weld on Both Sides of Joint
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Figure 6.8-5 Intermi ttent or Stitch Welds
This symbol indicates that the two
RHS components are to be joined by
a full penetration vee butt weld allaround the joint.
indicates full penetration
indicates vee butt weld
indicates all round the joint
Figure 6.8-6 Butt Weld
The weld shown in Figure 6.8-7 Bridge Traffic Barrier Post to Base Plate is a critical structural
weld and its conformance to specification is vital to the performance of bridge traffic barrier
posts under load. This is a complete penetration butt weld (compound butt weld placed first
followed by a fillet weld). Refer Figure 6.8-8 Combination Butt and Fillet Welds for
description.
The weld shown in Figure 6.8-9 Bridge Traffic Barrier Post to Anchor Plate describes the
welds to connect the bridge traffic barrier posts and anchor plates.
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Figure 6.8-7 Bridge Traffic Barrier Post to Base Plate
Figure 6.8-8 Combination Butt and Fil let Welds
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Figure 6.8-9 Bridge Traffic Barrier Post to Anchor Plate
6.9 References
Drafters should be familiar with the following Australian Standards:-
AS 1101.3-2008 - Graphical Symbols for General Engineering Part 3: Welding and
Non-destructive Examination
AS/NZS 1554.1-2004 - Structural Steel Welding Part 1: Welding of Steel Structures
AS/NZS 1554.3-2008 - Structural Steel Welding Part 3: Welding of Reinforcing Steel
AS/NZS 1554.6-1994 - Structural Steel Welding Part 6: Welding Stainless Steels for
Structural Purposes
AS/NZS 1665-2004 - Welding of Aluminum Structures
AS/NZS 4855-2007 - Welding consumables Covered Electrodes for Manual Metal Arc
Welding of Non-alloy and Fine Grain Steels - Classification